Navegando por Autor "PONTES, Luana Farias"

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Acesso aberto (Open Access)
Changes in lower dental arch dimensions and tooth alignment in young adults without orthodontic treatment
(Universidade Federal do Pará, 2015-06) MAUAD, Bruno Aldo; SILVA, Robson Costa; ARAGÓN, Mônica Lídia Castro de; PONTES, Luana Farias; SILVA JÚNIOR, Newton Guerreiro da; NORMANDO, Antonio David Corrêa
Objective: The aim of this longitudinal study, comprising young adults without orthodontic treatment, was to assess spontaneous changes in lower dental arch alignment and dimensions. Methods: Twenty pairs of dental casts of the lower arch, obtained at different time intervals, were compared. Dental casts obtained at T1 (mean age = 20.25) and T2 (mean age = 31.2) were compared by means of paired t-test (p < 0.05). Results: There was significant reduction in arch dimensions: 0.43 mm for intercanine (p = 0.0089) and intermolar (p = 0.022) widths, and 1.28 mm for diagonal arch length (p < 0.001). There was a mild increase of approximately 1 mm in the irregularity index used to assess anterior alignment (p < 0.001). However, regression analysis showed that changes in the irregularity index revealed no statistically significant association with changes in the dental arch dimensions (p > 0.05). Furthermore, incisors irregularity at T2 could not be predicted due to the severity of this variable at T1 (p = 0.5051). Conclusion: Findings suggest that post-growth maturation of the lower dental arch leads to a reduction of dental arch dimensions as well as to a mild, yet significant, increase in dental crowding, even in individuals without orthodontic treatment. Furthermore, dental alignment in the third decade of life cannot be predicted based on the severity of dental crowding at the end of the second decade of life
Acesso aberto (Open Access)
Factors related to orthodontic treatment time in adult patients
(2013-10) MELO, Ana Camila Esteves de Oliveira; CARNEIRO, Lilianne Oliveira Thiers; PONTES, Luana Farias; CECIM, Rodolpho Lobão; MATTOS, José Nazareno Rufino de; NORMANDO, Antonio David Corrêa
INTRODUCTION: The length of time that it takes an orthodontist to treat adult patients varies widely. OBJECTIVE: The aim of this study was to investigate how different variables influence treatment time. METHODS: Seventy clinical case reports of successfully treated adult patients were examined. The patients were selected from 4,723 records held by three experienced orthodontists. The influence exerted by the following variables on treatment time was assessed: age, sex, facial pattern, severity of malocclusion (measured by the PAR index), sagittal relationship of canines, type of brackets (ceramic or metal), tooth extractions, missed appointments and orthodontic appliance issues/breakages, the latter being the dependent variable. Assessment was performed by multiple linear regression analysis, followed by the stepwise method with P < 0.05. RESULTS: The number of times a patient missed their appointment (no-show) (R2 = 14.4%, p < 0.0001) and the number of appliance issues/breakages (R2 = 29.71%, p = 0.0037) significantly affected variability in treatment time, and these two variables together can predict 43.75% (R2 total) of the overall variability in treatment time. Other factors, such as canine relationship at the beginning of treatment, bracket type (metal or ceramic), tooth extractions, age at start of treatment, severity of the initial malocclusion, sex and facial pattern had no significant bearing on treatment time. CONCLUSIONS: The duration of orthodontic treatment in adults, when performed by experienced orthodontists, is mainly influenced by factors related to patient compliance. However, several factors which were not included in this study may contribute to variability in orthodontic treatment time.